Manufacture of printers&#39; rollers.



v s. CRUMP. MANUFACTURE OF PRINTERS ROLLERS.

APPLICATION FILED DEC-12,1913.

Patented June 1, 1915.

uni-sa ar s rarnn r orrrcn SAMUEL CRUMP, OF NEW YORK, Y., ASSIGNOR TOTHE CRUMP COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

MANUFACTURE OF PRINTERS ROLLERS.

mansao.

Specification of Letters Patent.

Patented June 1, 1915.

dition. "T;

One object of the invention is to enable the production of printersrollers in which the rollers shall be true from end to end on the stockor in other words accurately centered throughout. It is commonly knownthat considerable difficulty has arisen due to rollers cast in molds notbeing properly centered, and one purpose of my invention is to obviatesuch difiiculty by dispensing with the use of molds in the production ofthe rollers. 1 M

Another object of the invention is to provide an eflicient method ofmanufacture by which the roller may be made up of several concentriclayers of material differing in character and an improved rollerproduced thereby, as, for illustration, I may according to my inventionapply a coating of any d sired thickness of very strong printers rollercomposition on the roller-stock or piece of piping and then a body ofcomposition of less strength and much greater resiliency to complete'theroller, or I'may apply on the coating on the stock a body of suitablethickness of .the composition treated with-bichromate of ammonia so asto render-it insoluble and then superimpose on this-body a finalcoating, say about onersixteenth of an inch in thickness, of regularprintersroller composition so that the roller may have the requisitetacky surface for taking the ink.

. My invention they be utilized, in applying a true surface coating to aworn roller regardless of its body-composition, and also an exteriorsurface layer or coating on a roller in course of manufacture and which,for

illustration, might have a body portion of sponge rubber or othermaterial.

In the drawings forming a part of this application, I illustrate theinvention as employed in applying an exterior coating on a roller whosebody portion is formed of sponge rubber.

In carrying out my invention I depart from the casting of rollers inmolds and provide a method of forming either the entire roller or theexterior of the roller by spirally spinning the composition, layer uponlayer, on the stock or on the body Which mav already be on the stock,said layers each being formed of a spirally laid ribbon or width of themelted composition and the whole forming at the close of the operation ahomogeneous accurately centered body or roller of improved character.

The invention will be fully-understood from the detailed descriptionhereinafter presented, reference being had to the accompanying dr wings,in which:

Figure 1 is a perspective view, partly broken away, of a machine suitedto the carrying out of the method of my invention, said machine beingshown as in the operation of applying a coat to or. building up aprinters roller; Fig. 2 is an enlarged ver tical transverse sectionthrough the roller and the material holding receptacle; Fig. 3 is anenlarged front elevation of the receptacle detached from the machine;Fig. 1 is a detached view, partly broken away, of'said receptacle, saidview being the reverse of that shown in Fig. 3 and representing thereceptacle as having its rear side turned .port. a

In the drawings, 10 designates a suitable bed-plate or table mountedupon legs ll and providedat its opposite ends with standards 12 havingbearings 13 for spindles or shafts 14 of customary character in lathework and therefore requiring no special description. One of the spindles14, commonly known as a the live spindle, has mounted on it a drivescrewls'is mounted a frame 21 having a :around to the front, and Fig. 5 is atop view io'fa portion of the receptacle and its supby me.

post 22 adjustably secured thereto, said frame 21 having an undercutgroove 23 in its upper surface to receive the lower end of said post ina manner customary in lathe construction wherein tool posts are heldupon their rests in a manner permitting them to be moved toward andretracted from the Work.

Secured-to the post 22 is a receptacle, numbered as a whole 24,embodying some of the principal features of the machine used Thereceptacle 2% is open at its rear side, as shown in Fig. 2, andcomprises a bottom a front end 26, and corresponding sides 27, thelatter converging downwardly to the bottom 25 and extending upwardly andfrontwardly beyond the front end 26, as clearly shown in Figs. 2 and 3.The rear edges of the sides 27 of the receptacle are concaved in theirlower portions, as shown in Fig. 2, and the bottom 25 of the receptacleis formed with a frontwardly extending section 28 by means of which thereceptacle may be secured to a supporting plate 29, said plate beingextended at one end and adapted to be detachably secured to the post 22.The extension 28 of the bottom of the receptacle is formed just in frontof the front end 26 with a hole 30, and the plate 29 is below said holecut out, as at 31. The front end 26 of the receptacle inclinesdownwardly and rearwardly and its upper edge is over the hole 30, andthe frontwardly extending portions of the sides 27 converge downwardlyto said hole .30 and the purpose of the hole is to permit any overflowof the solution from the receptacle to pass downwardly through the hole30 and cut-away portion 31 in the plate 29 and fall into the drip pan20. It is my purpose that the receptacle 2 f shall, when in use, receivea substantially constant feed of the solution from the container orkettle and that the overflow from said receptacle shall be directed toand permitted to escape through the hole 30. I shall preferably secureupon the plate 29 one or more metal blades. or

wings 33, which will correspond exactly with the adjacent side of thereceptacle 24;, being inclined and concaved at their rear lower edgescorrespondingly with the said side. The frame 21 not only supports theplate 29 and receptacle 24, but has secured to it a crane or arm- 34from which-the bucket or container 32 is suspended, it being the purposethat the bucket or container 32 shall travel with the frame 21 and rceptacle 2i and have a substantially constant discharge through itsoutlet 35 into said receptacle.

I illustrate a printers roller 36 on the machine, said roller being heldbetween the spindles 1i and rotatable. The roller 36 shown comprises astock 37, a body 38 which may be of sponge rubber, a skin of linen orthe like 39 tightly inclosing said body and an outer coating 40, theapplication of said coating to the roller being one of the parposes ofthe present invention. The interior and body of the roller'36 may be ofany suitable character, since one part of the invention comprises amethod for applying a coating to a printers roller regardless of thecharacter of the body-portion of the same. I illustrate one constructionof prin ters roller, but will apply the coating 40 with the use of myinvention on printers rollers generally whether new rollers in thecourse of construction or old or damaged rollers requiring re-surfacing.

In the employment of my invention with the use of the machine shown theframe 21. carrying the receptacle 2i and container 32 will be moved tothe right hand portion of the table or bed-plate 10, and the roller 36to be treated will be secured between the spindles 14c, and thereupon,after the adjustment of the receptacle 24. to said roller, the dischargefrom the bucket or container 32 will be opened to permit the How of thecoating-composition into the said receptacle, filling such receptacle tothe top of the front end 26 thereof, and power will then be applied tothe wheel 15 for the purpose of retating the printers roller and throughthe gear wheels 16, 17 the screw-shaft 18, the result being that duringthe rotation of the roller 36 the frame21will be caused totravel alongthe roller and toward in the construction illustrated, the left hand endthereof. The receptacle 24 will be adjusted rather close against-thebody of the roller to be coated, so that during the travel of saidreceptacle said body may receive therefrom a thin coating of thesolution-composition. After the receptacle 2%: has traveled toward theleft the full length of the roller 36, it will be returned to the righthand end of the roller and readjusted against the same and then causedto travel toward the left, leaving another thin coating of thecomposition material on the roller. This will be repeated as often asmay be required for obtaining a coating 40 of the desired or requisitethickness. The composition-material in the and being cut at their rearedges to partly 4 fit the body of the roller, are important, in that thecoating by reason of said construction becomes evenly applied to theroller and without streaking or leaving a spiral line on the roller. Therelative proportions and formation of the front end 26 and sides 27 ofthe receptacle 24 are also important in that all overflow iskept undercontrol and directed tothe discharge opening 30, whence the overflopasses to the drip-pan 20. The presence 0 the blades or wings 33 toengage the surface of the roller as a trail after the receptacle 24, isimportant in that they aid in the production of a smooth uniform coatingon the roller and without streaking or leaving lead lines in saidcoating. I do not wish to limit myself to the use of the blades or wings33, but said blades or wings are of advantage and add to the efficiencyof the machine. I prefer that the receptacle 24 be kept filled duringthe time the machine is in use so that at all times the roller 36 maythroughout its length receive a substantially uniform layer of thematerial from said receptacle.

I have hereinbefore described the invention as employed for applying acoating to a printers roller whether said roller was in the course ofmanufacture or an old roller requiring to be resurfaced. It is to beunderstood, however, that my inventionis not hmited to merely applyingthe exterior coating on a printers roller, but may be employed forforming the entire roller of priiters roller or other suitablecomposition, an for the roller would be applied to the machine describedand the receptacle carrying the melted composition caused to travelalong the same a sufficient number of times to create a printers rollerof the requisite diameter.

The method constituting my invention 'will be substantially understoodfrom the foregoing explanation and description without further detailedcomment. The melted composition supplied to the receptacle 24 may varyfrom time to time if layers varying incharacter are to be made use of inbuilding up or i'esurfacingthe roller, and

"said receptacle will be adjusted outwardly from the roller as thelatter increases in diameter regardless of what composition may besupplied thereto. The maintenance of a substantially uniform level ofthe body of melted composition in the receptacle 2 4 s distinctlyadvantageous and likewise t is advantageous that said body ofcompositlon engages only a portion of the circumference of the roller,since under such conditions the ribbon-like width of the compositiontaken by and spirally wound upon the roller to form a layer thereon issubstantially unlform in character. The layers of omposition taken by orapplied to the roller are further rendered uniform in thickness by therear edges of the bottom and following side of the traveling receptacle24.

The machine shown in the drawings may be utilized for carrying myinvention into efiect but my invention is not confined to in that use ofthe invention the stock No. 803,436 filed November 28, 1913 whichdescribes and claims the machine shown and described herein.

What I claim as my invention and desire to secure by Letters Patent, is:

1. The'method hereinbefore described of forming or completing a printersroller by applying the composition, while in a melted state, in a layeror layers, as required, to the stock or the body already thereon, whichconsists in rotating the stock or roller-body in the presence of a bodyof the melted composition held against a portion of the same, causing arelative traveling movement be tween said stock or roller-body and saidbody of melted composition whereby a spirally wound ribbon or width ofsaid composition is taken by said stock or roller-body, and renderingthe ribbon-layer of composition, as taken by the printers roller, ofuniform outer surface.

2. The method hereinbefore described of forming or completing a printersroller by applying the composition, while melted, in layers to the stockor body already thereon, which consists in rotating the stock in thepresence of the melted composition held against a portion of thecircumference of said stock or body, rendering the layer of compositiontaken by the roller uniform in taken by the roller for a layer thereonuniform in thickness, and adjusting the relation of thebody of meltedcomposition to the roller as the latter increases in diameter.

4. The method hereinbefore described of forming or completing a'printersroller by applying the composition, while melted, in

layers to the stock or body already thereon, which consists in rotatingthe stock, holding a body of the melted composition against a portion ofthe circumference of the stock or body thereon and during such rotationcausing said body of melted composition to suecessively travel along thesame, rendering each spiral ribbon or layer of composition taken by theroller for a layer thereon uniform in thickness, wiping away the spirallead line that may be left by the traveling body of melted composition,and adjusting the relation of the body of melted composition to theroller as the latter increases in diameter.

he method hereinbefore described of forming or completing a printersroller by applying the composition, while melted, in layers to the stockor body already thereon, which consists in rotating the stock, holding abody of the melted composition against a portion of the circumference ofthe stock or body thereon and during such rotation causing said body ofmelted composition to successively travel along the same, rendering eachspiral ribbon or layer o1 composition taken by the roller for a layerthereon uniform in thickness, maintaining the level of the body ofmelted composition during its travel substantially constant, andadjusting the relation of the body of melted composition to the rolleras the latter increases in diameter.

Signed at New York city, in the county of New York and State of NewYork, this 9th day of December A. D. 1913.

SAMUEL (JR-UMP. Witnesses ARTHUR MARION, CHAS. C. GILL.

